[Pharo-dev] Unwind error during termination

Eliot Miranda eliot.miranda at gmail.com
Thu Oct 24 15:43:16 EDT 2013


On Thu, Oct 24, 2013 at 11:25 AM, Clément Bera <bera.clement at gmail.com>wrote:

> OK I'll wait for another use case or until it happened to me. Like a
> usecase from a fresh image.
>
> It's just it may be due to the new inspector, new debugger or new
> compiler. Just wondering.
>

It's definitely not due to the new code.  I see it occasionally in Squeak
images without Opal.


>
>
> 2013/10/24 Eliot Miranda <eliot.miranda at gmail.com>
>
>>
>>
>>
>> On Thu, Oct 24, 2013 at 12:10 AM, Clément Bera <bera.clement at gmail.com>wrote:
>>
>>> Ok I have the error too.
>>>
>>> Strangely enough, the error is triggered because the third
>>> BlockClosure>>#on:do: context has 2 temporaries instead of 3.
>>>
>>> Igor / Esteban do you have a clue ? Why a context would have less
>>> temporaries than expected ? Problem from context creation out of the stack ?
>>>
>>
>> No.  It'll be popping too much off the stack.  See e.g. ContextPart>>jump.
>>
>>
>>>
>>> I will try to find some time to look at this problem. Though it is not
>>> an easy one it will take some time to be fixed.
>>>
>>>
>>> 2013/10/24 <btc at openinworld.com>
>>>
>>> **
>>>> Clément Bera wrote:
>>>>
>>>> Hello,
>>>>
>>>> I'm interested.
>>>>
>>>> Please send me the image in private mail not to overload the mailing list
>>>> with large attachment.
>>>> Alternatively, give me a place where I can download it.
>>>>
>>>>
>>>>  http://files.openinworld.com/Pharo/PharoLauncher-Unwind-Error.zip
>>>>
>>>>  The steps to reproduce are: open the image, execute 1halt, close debugger ?
>>>>
>>>>
>>>>  There are three debuggers already open.  Just close them.  The third
>>>> close generates the error.
>>>> A confounding factor may be your running this on a different VM.  This
>>>> is mine...
>>>>
>>>> http://files.openinworld.com/Pharo/PharoLauncher-Unwind-Error-VM.zip
>>>>
>>>> Win32 built on Mar 13 2013 18:49:42 Compiler: 4.6.2
>>>> VMMaker versionString git://gitorious.org/cogvm/blessed.git Commit:
>>>> 412abef33cbed05cf1d75329e451d71c0c6aa5a7 Date: 2013-03-13 17:48:50 +0100
>>>> By: Esteban Lorenzano <estebanlm at gmail.com> <estebanlm at gmail.com>Jenkins build #14535
>>>> NBCoInterpreter NativeBoost-CogPlugin-EstebanLorenzano.18 uuid:
>>>> a53445f9-c0c0-4015-97a3-be7db8d9ed6b Mar 13 2013
>>>> NBCogit NativeBoost-CogPlugin-EstebanLorenzano.18 uuid:
>>>> a53445f9-c0c0-4015-97a3-be7db8d9ed6b Mar 13 2013
>>>>
>>>> The error still occurs if I try the image on the latest VM, but then
>>>> again the effect may already be in effect.
>>>>
>>>> btw, Its not directly causing me pain since I can continue in the
>>>> image, but still thanks for checking it out for general improvements.
>>>>
>>>> cheers -ben
>>>>
>>>>  Best,
>>>>
>>>>
>>>>
>>>> 2013/10/22 <btc at openinworld.com> <btc at openinworld.com>
>>>>
>>>>    **
>>>> For a while now, every now and then when closing a debugger I have been
>>>> getting an "Unwind error during termination"
>>>>
>>>>
>>>>
>>>> I happened to have saved the image moments before it just occurred again.
>>>> From opening that save error can be reliably triggered in three clicks.
>>>> I can provide this image if anyone is interested in it.
>>>>
>>>> cheers -ben
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>
>>
>> --
>> best,
>> Eliot
>>
>
>


-- 
best,
Eliot
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